N gauge oval

[OwL]

I always use set track code 80 but I am open to advice if there is another track I can use.

As I believe Railwaygun and a few others have mentioned in posts before mine, perhaps consider Kato Unitrack. It really is excellent stuff and all the geometry is established for you. It clips together like a doddle and all points etc can be integrated. They sell remarkably good sets for beginners and experts alike.
I have a complete oval of unitrack ideal as a running in/test track. It's really good stuff and welll worth consideration.

[AlexanderJesse]

I would also second that... either Peco code 55 flextracks or Kato Unitrack